pleas kasih taau yaaa!!!! +caranya

L.permukaan = 2(pl+pt+lt)
                      = 2 (21.14 + 21.16 + 14.16)
                      = 2 (294 + 336 + 224)
                      = 2 (854)
                      = 1.708 cm²

semoga membantu :)

luas= 2(21.16) + 2(21.14) + 2(14.16)
= 2.336 + 2.294 + 2.224
= 672 + 588 + 448
= 1708cm²